|AP Photo/Nikolay Koreshkov|
MOSCOW (AP) — Human error may be to blame for the particular Russian plane crash that wiped out 71 people, Russian investigators stated Tuesday, noting that the plane’s fliers failed to turn on the heating device for its measuring equipment, resulting in mistaken speed data.
After studying the particular An-148’s flight data recorder, the particular Interstate Aviation Committee said that Sunday’s crash near Moscow occurred following the pilots saw conflicting data at the plane’s two air speed indications.
The flawed readings came since the pilots failed to turn on the heating system unit for the plane’s pressure dimension equipment prior to takeoff, the panel said.
The pilots had positioned the An-148 on autopilot after removing from Moscow’s Domodedovo Airport yet took its manual controls when they heard alarm signals caution of conflicting speed data. 1 indicator showed the plane’s acceleration at zero, investigators said.
The particular pilots then performed a series of moves and eventually took the plane into a jump at 30-35 degrees. It dropped into a snowy field outside of Moscow six minutes after takeoff, eliminating all 65 passengers and 6 crew onboard.
The committee mentioned it is continuing to study the data, yet noted that “erroneous data over the pilots’ speed indicators may have been an issue that triggered the special trip situation. ”
It emphasized which the flawed speed data resulted in the “icing of pressure measurement musical instruments that had their heating techniques turned off. ”
The RBC information outlet quoted pilot Andrei Litvinov as saying the pilots possibly took the plane into a dive due to low speed readings to avoid holding on and didn’t have time to appropriate their mistake at such a lower altitude.
Earlier reports indicated the particular plane’s captain had chosen never to have the plane undergo de-icing prior to takeoff. The crew decides whether or not to have the plane sprayed by de-icing liquid, depending on weather conditions and the condition of the plane.
Saratov Airlines, which usually operated the plane, said its chief had more than 5, 000 hrs of flying time, 2, eight hundred of them in an An-148, and the additional pilot had 812 hours associated with experience, largely in that model.
The particular aviation committee’s description of the Moscow crash resembled the 2009 crash of the Air France Airbus 330 on the Atlantic Ocean, which killed every 228 people aboard. Ice uric acid blocked pressure sensors responsible for atmosphere speed indication, and erroneous quickness readings misled the pilot, exactly who pitched the Air France plane dramatically up instead of down as it stalled and lost control.
A crash associated with another An-148 in March last year during a training flight in The ussr that killed all six team members on board was also linked to the faulty pressure instrument resulting in incorrect speed readings, prompting the baffled crew to exceed the allowable speed limit.
The An-148 design itself has a very spotty security record, with two crashes plus a string of major incidents by which pilots struggled to land properly. Saratov Airlines has grounded additional An-148s in its fleet pending the particular Moscow crash investigation.